Gratitude should be more than just an “exercise” for when we are in the mood. It should be our constant attitude. King David said that praise and gratitude are the gateway to the presence of the Lord.
D&C 78:19 And he who receiveth all things with thankfulness shall be made glorious; and the things of this earth shall be added unto him, even an hundred fold, yea, more.
Try this for 21 days. Every night when you say your prayers. Express to the Lord three things that happened that day that you are grateful for. That’s it. Don’t ask for anything. Just express gratitude for three things. I guarantee it will change your life.